Update copyright, setup.py and module metadata, remove redundnant license data

Changed setup.py to reflect steamodd's new home and my address,
also added additional classifiers. Removed old description for
new one.

Added some module metadata variables which are defacto standard
these days, and use them in setup.py where necessary.

Remove python 2.2 compatibility in setup.py, because honestly
if you still use it at this point you deserve what you get.

Removed AUTHORS file, has been redundant for years now and is
in general redundant in python due to __author__.

Removed redundant license headers in favor of 3 line description,
copyright, and license reference. Because really gigantic walls of
text are not needed legally and no fun for anyone.

Updated copyright to current year